Considering the universe of beginners (B), and the subset who are visual thinkers (V), then unless |V|/|B| >= 0.5, then no.
More data is needed.
More data is needed.
According to http://en.wikipedia.org/wiki/Auditory_learning 20% of people are auditory learners.
Since the only remaining group is visual learners, 65% of people must be visual learners.